At laparoscopic right hemicolectomy, pneumoperitoneum will be established following insertion of a 12mm umbilical port. Two or 3 further operating trocars (5mm) will be inserted; the number and position will be at the operating surgeons discretion. When it is necessary to use more than two 5mm trocars to complete the procedure this will be recorded. Ligation of the vascular pedicle must be performed intracorporeally using an endovascular stapling device, endoclips or an electrothermal coagulation device. If the major vessels are ligated extracorporeally when the mobilised colon has been exteriorised for resection the procedure will be classified as "laparoscopic assisted"- i.e. converted to an open procedure- for the purposes of this trial. Intestinal continuity will be restored extracorporeally using end to end, end-to side or side-to side anastomosis. The type of anastomosis will be at the surgeons' discretion (stapled vs. handsewn) and will be recorded.